Improvement in thread-cutters



T. MASAC.

THREAD-CUTTER.

No. 189,763. Patented April 17, 1877.

N. FEIERS, PNOTO-LITHOGRAPHER, WASHINGTON. D I;

thread-cutter is applied.

UNITED STATES PATENT OFFICE.

THEOPHILUS MASAO, OF PHILADELPHIA, PA., ASSIGNOR OF ONE-HALF HIS RIGHTTO E. V. MAOHETTE, JR., AGENT, OF SAME PLACE.

IMPROVEMENT IN THREAD-CUTTERS.

Specification forming part of Letters Patent No. 189,763, dated April17, 1877; application tile 1 February 27, 1877.

invention applied. Fig. 2 is a perspective of the cutter. Fig. 3 is avertical transverse section of the spool and cutter.

My invention has for its object to provide a detachable thread-cutterfor spools, said device serving, also, the purpose of retaining the endof the thread and preventing unravelmg.

My invention consists of a metallic plate having turned down ends,whereby it is clamped on the spool, said plate having a notch or notcheson its edge, by means of which the thread is cut, one of the ends of thethread which remains on the spool being retained in the notch after thecutting is effected, thereby preventing unraveling.

Referring to the accompanying drawing, A designates a spool to which myimproved B is the thread-cutter, consisting of a spring metallic platewith turned-down ends b b, which clamp the heads of the spool, enteringthe core a of the latter for a short distance. One of the edges of theplate B is formed with one or more sharpedged notches, b b b, whichserve to cut the thread 0 when the latter is introduced into one of saidnotches and drawn against the sharp edge. The end of the thread, whichis retained on the spool, will remain in said notch, preventingunraveling.

The ends of the thread cut off will not be blunt or abrupt, but will besevered in such a way as to leave some of the fibers longer than theothers, thus permitting the ready formation of a point to facilitate theinsertion of the same in the needle-eye.

The object of forming several notches in the bridge or plate Bis to haveone of said notches always closely adjacent to the coil of thread thenbeing unwound; or, in other words, no

matter from what point of the spool the thread is unwindingthe middle oreither endthere will be a notch near the coil where it is desired toform the out.

When the thread has been all used ofi the spool the cutter is readilyremoved from the latter by springing out its ends, when it may beapplied to a fresh spool.

What I claim as my invention is The thread-cutter herein described,consisting of the plate B, having clamping-ends b b and notched at b,and adapted to be readily applied to, and removed from, a spool,substantially as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this22d day of February, 1877.

THEOPHILUS MASAG.

Witnesses:

SAML. J. VAN STAvoREN, CHAS. F. VAN HORN.

